Inline constraint test statements are now accessible from the outside

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test for 'constraint' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added test case for 'object_type_col_properties' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added test case for 'substitutable_column_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Add test case for 'supplemental_id_key_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Fixed 'supplemental_log_grp_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added test case for 'supplemental_log_grp_clause' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added test case for 'supplemental_logging_props' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Shorter 'virtual_column_definition' rule definition

optional(.. ~ zeroOrMore(..)) can be expressed as zeroOrMore(..)

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Removed redundant functions

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added test case for 'virtual_column_definition' rule

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Due to travis-ci constraints, we can not use long-running test cases

Signed-off-by: Sebastian Hoß <mail@shoss.de>